Quick Coupling Systems - Liebherr Group...Liebherr Quick Coupling Systems 11 The use of the right...

Quick Coupling Systems

2 Liebherr Quick Coupling Systems

Areas of applicationNo matter whether in road construction, dismantling operations or in pipe-laying and sewer construction, a competent well-established team is an important prerequisite for economical and prompt implementation of challenging projects. Another requirement is the use of efficient multi-purpose construction machinery and the appropriate working tools.

DismantlingThe application of more stringent legislation in respect of dismantling operations has led to increased demands on the tools implemented in this sector. Aside from traditional hydraulic hammers, depending on the type of dismantling job, demolition and sorter grabs, hydraulic cutters, demolition pincers, shears and pulverisers are also used. Targeted tool deployment thus permits economical and safe demolition of existing buildings and appropriate material sorting.

Pipe-laying and sewer constructionIn the course of sewer construction drivers must repeatedly master various tasks in quick succession with their hydraulic excavators: excavation, foundation work, pipe-laying, sand back-filling, filling, lining and compacting. The use of a hydraulic excavator with a quick coupling system is essential for executing pipe-laying and sewer construction pro-jects economically and competitively.

With its quick coupling systems and working tools Liebherr offers practical economical solu-tions for virtually all construction and dismantling operations. For increased productivity, efficiency and safety on the building site.

3Liebherr Quick Coupling Systems


Mechanical quick coupling system

• manual opening and closing of the quick coupling system

• manual connecting and disconnecting of hydraulic lines

Liebherr’s mechanic quick coupling system is the perfect solution when aiming to increase the flexibility and productivity of machinery while keeping investment costs to a minimum. The sturdy construction, proven over many years, impresses with its straightforward, safe and reliable mechanical design. After releasing the screw fastening pin, the two locking pins with internal double threading are manually retracted from one side and then inserted follow-ing tool attachment.

A safety latch on the load hook of the quick coupling system affords additional safety as it prevents unintentional unhooking of the load. The safety latches on the load hook of the Liebherr quick coupling system offer additional safety. They can bear 100 % of the maximum permissible hook load (basic safety) - and thus considerably more than the 10% required by EN 474.

Features and customer benefits• straightforward sturdy design for a long service life and low maintenance costs

• increased machine utilization due to faster tool changing at a low investment cost

• high standard of safety with additional screw fastening pins

• locking pins with double threading for fast manual releasing and locking from one side

• load hook equipped as standard with heavy-duty safety latches for increased safety when lifting loads

Areas of application• for infrequent tool changes

• for deployment in the toughest conditions (e.g. tunnel construction)



Hydraulic quick coupling system

Mechanical working tools can be changed effortlessly from the operator’s cabin at the touch of a button with the Liebherr hydraulic quick coupling system. During tool change two-handed operation, the electronic position sensors and visual control by the operator from the driver’s cabin of the left locking pin guarantees maximum safety - ensuring that quick coupling system and working tool remain reliably connected.

Improved safety thanks to the sturdy heavy-duty safety latches on the load hook: they bear 100 % of the maximum permissible hook load (basic safety) - and thus considerably more than the 10% required by EN 474.

Features and customer benefits• faster safer changing of mechanical working tools from the operator’s cabin

• optimum transmission of digging forces like those of directly attached tools

• unique level of safety when changing tools afforded by position monitoring of the locking pin by electronic position sensor instead of pressure monitoring of the locking cylinder

• straightforward reliable visual locking control from the operator’s cabin with a clear view of the left locking pin

• optical and acoustic warning when the quick coupling system is open

• load hook equipped with heavy-duty safety latches as standard for increased safety when lifting loads

Areas of application• for frequent tool changes (of predominantly mechanical working tools)

• opening and closing of the quick coupling system at the touch of a button

• manual connecting and disconnecting of hydraulic lines



LIKUFIX

LIKUFIX is the name of the Liebherr fully automatic quick coupling system. The combination of a hydraulic Liebherr quick coupling system with the LIKUFIX coupling block permits fast safe changing of mechanical and hydraulic working tools from the operator’s cabin. The deployment options of a hydraulic excavator and machine productivity can thus be increased by up to 30%. A worthwhile investment for over 25 years.

Features and customer benefits• faster and safer changing of mechanical and hydraulic working tools from the operator’s cabin

• machine utilization increased to up to 90% thanks to extended deployment options

• productivity increased by an average of 30% (based on practical customer experience)

• maximum flexibility due to add-on options to all hydraulic excavators with operating weights of between 8 and 120 tons

• unique level of safety when changing tools afforded by position monitoring of the locking pin by electronic position sensor instead of pressure monitoring of the locking cylinder

• straightforward reliable visual locking control from the operator’s cabin with a clear view of the left locking pin

• optimum fluid flow through hydraulic couplings with large cross-sections for fast tool action and high fuel efficiency

• hydro-mechanical bearing support of the tool coupling block ensuring the long service life of the hydraulic couplings

• optical and acoustic warning when the quick coupling system is open

• load hook equipped as standard with heavy-duty safety latches for increased safety when lifting loads

Mounting on tools and hydraulic excavators of other manufacturersPractically all hydraulic add-on tools can be fitted with LIKUFIX. Hydraulic excavators from other manufacturers can be easily fitted with a Liebherr quick coupling system or LIKUFIX.

• opening and closing of the quick coupling system at the touch of a button

• automatic connecting and disconnecting of the hydraulic lines during coupling



Tool ControlTool Control is an additional electro-hydraulic function that simplifies work with hydraulic working tools: up to 10 combinations of fluid quantity and pressure can be stored with the tool name, and directly selected via the display unit with touch screen function. With Tool Control the machine operator can easily select the parameters for the required hydraulic tool at the touch of a button – with no compli-cated re-setting for a tool change. This function is already featured as standard on most hydraulic excavators.

Tool Management (Option)Tool Management enables automatic tool recognition by the hydraulic excavator. The data stored on the chip in the work-ing tool are read out by the read/write head in the LIKUFIX coupling block on the hydraulic excavator, and transmitted to the operator’s control console. The operator acknowl-edges data at the touch of a button, thus ensuring automatic adjustment of the fluid quantity and pressure. Aside from this technical data, fluid type and the hours worked with this tool are saved on the chip.

Electro contacts (Option)Five electro contacts guarantee signal transmission between the hydraulic excavator and the working tool. They enable controlling of electro valves in a working tool for triggering various hydraulic functions and transmitting signals from a position transmitter/GPS receiver to a working tool. The contact pins are spring-mounted and designed for heavy-duty building site implementation.

Functions for increased productivity

Tool management system read/write head (contact-free, protected)

Electro contacts


The use of the right tool and optimum utilization of construction machinery contribute to the economical and prompt execution of building projects. Fast and easy tool changing is essential for high machine utilization and productivity, while also achieving a high standard of safety. This is only possible if the oper-ator can see whether the quick change system and working tool are correctly connected following tool change. The Liebherr hydraulic quick coupling system offers this option, and thus guarantees maximum productivity and occupational safety.

• visual control: straightforward reliable visual locking control from the operator’s cabin with a clear view of the left locking pin

• position monitoring: unique level of safety when changing tools afforded by position monitoring of the locking pin and the quick coupling system by electronic position sensors instead of pressure monitoring of the locking cylinder

• alarm signalling: optical and acoustic warning when the quick coupling system is open or not locked correctly

• safety in the event of pressure loss: reliable connection even in the event of pressure loss in the locking cylinder hydraulic line thanks to form-fit coupling

• safety during load lifting: sturdy heavy-duty safety latches on the load hooks bear 100 % of the maxi-mum permissible hook load (basic safety) for a high standard of safety when transporting heavy loads

• safety against damage: hydraulic couplings are recessed or integrated into solid metal plates

• safety against incorrect operation: perfected design to reduce danger of damage caused by incorrect operation

Productivity with safety


ReconditioningThanks to replaceable wearing parts Liebherr quick change systems can be reconditioned at little cost within the shortest of times to restore them to their “as new” state. Hydraulic couplings on the working tool and hydraulic excavator can be easily replaced on the building site by the machine operator.

Quick and easy: changing sealing washers on the working toolThe condition of the sealing washers can be checked by pressing down the sealing discs. If replacement is necessary, the sealing washer can be quickly replaced with the help of a screwdriver and a sharp tool.

• Hydraulic excavator: couplings with maintenance-free metallic washers

• hydraulic working tools: couplings with sealing washers

Easy maintenance, long service life

Press together new sealing washer and place on the sealing disc with the open end facing downwards.

Allow the sealing washer to jump into the groove. Remove screwdriver.Press sealing disc down as far as the groove, position the screwdriver in the centre of the sealing washer and remove hand.

Press down sealing disc on the coupling plug with a screwdriver and remove the top sealing washer (red) with a sharp tool.

Working tool hydraulic couplings with sealing washers


Operating weight kg

SW 22 SW 33 SW 48 SW 66 SW 77 SW 92

Qui

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QC Mechnical • • • • •

QC Hydraulic • • • • •

LIKUFIX • • • •

Competition machines 8,000 - 10,000 M M/H/L

Lieb

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mod

els

A 910 Compact (A 309) 11,600 - 12,800 M M/H/L

A 912 Compact (A 311) 12,700 - 14,100 M M/H/L

A 914 Compact (A 312) 14,700 - 16,600 M/H/L M/H/L

A 914 (A 314) 15,200 - 17,500 M/H/L M/H/L

R 914 Compact (R 313) 15,100 - 17,500 M/H/L M/H/L

A 916 (A 316) 16,800 - 19,000 M/H/L M/H/L

A 918 Compact 17,500 - 19,500 M/H/L M/H/L

A 918 (A 900) 17,700 - 19,900 M/H/L M/H/L

R 918 (R 317) 18,150 - 21,750 M/H/L M/H/L

A 920 (A 904) 18,900 - 21,700 M/H/L

R 920 (R 900) 20,200 - 23,500 M/H/L

R 922 (R 906 Advanced - Classic)

21,350 - 23,600 M/H/L

A 924 21,400 - 26,500 M/H/L


23,500 - 27,600 M/H/L

R 924 Compact 25,150 - 29,050 M/H/L


25,700 - 28,950 M/H/L

A 928 (A 924 Plus)

26,500 - 27,600 M/H/L

R 936 (R 934) 30,550 - 33,850 M/H/L

R 946 (R 944) 38,050 - 41,600 M/H/L

R 950 SME 42,950 - 44,800 M*/H/L*

R 956 (R 954) 49,600 - 57,100 M/H/L

R 960 SME 58,980 - 60,600 M*/H/L*

R 966 (R 964) 66,000 - 76,300 H

R 970 SME 76,800 - 78,600 H

R 976 (R 974) 85,300 - 95,500 H

R 980 SME 93,900 - 97,800 H

* on request


Liebherr Quick coupling systems for Earthmoving direct mounted

mechanic quick coupler

hydraulic quick coupler

hydraulic quick coupler + hydraulic coupling

system= LIKUFIX

Tool ControlTool Management

(in combination with LIKUFIX*)

Electrocontacts(in combination with

LIKUFIX*)

Application - for earthmoving

- for rare tool changes

- for heavy applications(f. e. tunnel application)

- for frequent tool changes(mainly mechanic tools)

- for regular tool changes

- for canal construction, civil engineering and demolition

- 10 memory slots for tool data (oil pressure and oil flow) in the hydraulic excavator

- automatic tool recognition (transmis-sion of all relevant tool data to the excavator)

- 5 electro-contacts to transmit signals be-tween excavator and working tool

Advantages

- maximum handling performance

- best fuel efficiency (tons per litre Diesel)

- simple technology(only mechanic components)

- low cost of purchase

- quick change of mechanic tools

- no persons in danger zone (change of mechanic tools)

- easy retrofitting of LIKUFIX

- quick change of mechanic and hydraulic tools

- no persons in danger zone

- Fast manual setting of the required tool data (oil pressure and oil volume) at the push of a button

- easy analysis and post calculation (tool work-ing hours saved on tool chip)

- shelter from accidental misuse

- to control electro-valves of the working tool

- to transmit a BUS-signal

(f. e. GPS-signal)

Disadvantages

- no flexibility

- safety hazard at tool change by pins

- reduced lift capac-ity due to additional weight of quick coupler


- additional components



- In case of incorrect operation (selection of incorrect tool data) there will be restricted performance and dan-ger of damage to the tool

- additional components(maintenance)


additional weight (machine) kg

-SW 33 = approx. 100SW 48 = approx. 200SW 66 = approx. 350

SW 33 = approx. 110SW 48 = approx. 226SW 66 = approx. 430


- - -

opening and closing quick coupler

- manuallyhydraulically

(push a button)hydraulically

(push a button)- - -

connecting and disconnecting hydraulic lines

- manually manually automatically - - -

expenditure of time and personal(change of mechanic tool)

approx. 25 min.(2 persons)

approx. 10 min. < 1 min. < 1 min. - - -

expenditure of time and personal(change of hydraulic tool)


approx. 25 min. ca. 15 min. < 1 min. - - -

* not for LIKUFIX 33


Liebherr Quick coupling systems for Earthmoving direct mounted

mechanic quick coupler

hydraulic quick coupler

hydraulic quick coupler + hydraulic coupling

system= LIKUFIX

Tool ControlTool Management

(in combination with LIKUFIX*)

Electrocontacts(in combination with

LIKUFIX*)

Application - for earthmoving

- for rare tool changes

- for heavy applications(f. e. tunnel application)

- for frequent tool changes(mainly mechanic tools)

- for regular tool changes

- for canal construction, civil engineering and demolition

- 10 memory slots for tool data (oil pressure and oil flow) in the hydraulic excavator

- automatic tool recognition (transmis-sion of all relevant tool data to the excavator)

- 5 electro-contacts to transmit signals be-tween excavator and working tool

Advantages

- maximum handling performance

- best fuel efficiency (tons per litre Diesel)

- simple technology(only mechanic components)

- low cost of purchase

- quick change of mechanic tools

- no persons in danger zone (change of mechanic tools)

- easy retrofitting of LIKUFIX

- quick change of mechanic and hydraulic tools

- no persons in danger zone

- Fast manual setting of the required tool data (oil pressure and oil volume) at the push of a button

- easy analysis and post calculation (tool work-ing hours saved on tool chip)

- shelter from accidental misuse

- to control electro-valves of the working tool

- to transmit a BUS-signal

(f. e. GPS-signal)

Disadvantages

- no flexibility

- safety hazard at tool change by pins






- In case of incorrect operation (selection of incorrect tool data) there will be restricted performance and dan-ger of damage to the tool



additional weight (machine) kg

-SW 33 = approx. 100SW 48 = approx. 200SW 66 = approx. 350



- - -

opening and closing quick coupler

- manuallyhydraulically

(push a button)hydraulically

(push a button)- - -

connecting and disconnecting hydraulic lines

- manually manually automatically - - -

expenditure of time and personal(change of mechanic tool)


approx. 10 min. < 1 min. < 1 min. - - -

expenditure of time and personal(change of hydraulic tool)


approx. 25 min. ca. 15 min. < 1 min. - - -

The Liebherr Group of Companies

Wide Product RangeThe Liebherr Group is one of the largest construction equipment manufacturers in the world. Liebherr’s highvalue products and services enjoy a high reputation in many other fields. The wide range includes domestic appliances, aerospace and transportation systems, machine tools and maritime cranes.

Exceptional Customer BenefitEvery product line provides a complete range of models in many different versions. With both their technical excel lence and acknowledged quality, Liebherr products offer a maximum of customer benefits in practical application.

State-of-the-art TechnologyTo provide consistent, top quality products, Liebherr attaches great importance to each product area, its components and core technologies. Important modules and components are developed and manufactured inhouse, for instance the entire drive and control techno logy for construction equipment.

Worldwide and IndependentHans Liebherr founded the Liebherr family company in 1949. Since that time, the enterprise has steadily grown to a group of more than 130 companies with over 38,000 employees located on all continents. The corporate headquarters of the Group is LiebherrInternational AG in Bulle, Switzerland. The Liebherr family is the sole owner of the company.

www.liebherr.com

Liebherr-Hydraulikbagger GmbHLiebherrstraße 12, D-88457 Kirchdorf / Iller +49 7354 80-0, Fax +49 7354 80-72 94www.liebherr.com, E-Mail: [email protected]/LiebherrConstruction

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